[yocto-perf] Build Perf Test Report for CentOS Linux 7 (Core)

[Yocto CentOS 7 Build Perf Tester]

Yocto build performance test report.

TEST METADATA:
==============
                      CURRENT COMMIT          COMPARING WITH      
Hostname:             ypperf-centos7          ypperf-centos7      
Branch:               master                  master              
Commit number:        51868                   51851               
Commit:               c942230eee405d35b99d    c32b26ce8d43f39aecf4
Number of test runs:  3                       3                   

TEST RESULTS:
=============
  test1: Build core-image-sato
           build time              1:30:28  ->  1:30:38         +10.2 s   +0.2 %
           tmpdir size           33.30 GiB  ->  33.30 GiB     +1.38 MiB   +0.0 %
           rootfs size          235.31 MiB  ->  235.31 MiB     -5.3 kiB   -0.0 %
                                                                                
  test12: Build virtual/kernel
           build time               7:53.5  ->  7:53.3          -0.22 s   -0.0 %
                                                                                
  test13: Build core-image-sato with rm_work enabled
           build time              1:32:14  ->  1:31:57         -16.6 s   -0.3 %
           tmpdir size            6.49 GiB  ->  6.49 GiB     -600.0 kiB   -0.0 %
                                                                                
  test2: Run core-image-sato do_rootfs with sstate
           do_rootfs time           2:03.0  ->  2:03.0          +0.01 s   +0.0 %
                                                                                
  test3: Bitbake parsing (bitbake -p)
           parse_1 time             27.2 s  ->  27.3 s          +0.05 s   +0.2 %
           parse_2 time             17.1 s  ->  17.1 s          +0.04 s   +0.2 %
           parse_3 time              1.8 s  ->  1.7 s           -0.01 s   -0.5 %
                                                                                
  test4: eSDK metrics
           installer_bin size     1.24 GiB  ->  1.24 GiB      +81.7 kiB   +0.0 %
           deploy time              2:11.4  ->  2:11.3          -0.08 s   -0.1 %
           deploy_dir size        4.05 GiB  ->  4.05 GiB     -453.3 kiB   -0.0 %
                                                                                

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